Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Line Items]
Valuation allowance	$ 61	$ 63
Net decrease and increase in valuation allowance	2	16
Domestic and foreign net operating loss, capital loss and tax credit carryovers	250
Deferred tax asset operating loss carryforwards	85
Net operating loss carryover expiration date	Our net operating loss carryovers expire through 2031, and our foreign capital loss carryovers have no expiration period.
Expiration of tax credits	Our domestic alternative minimum tax credits have no expiration period and our foreign asset tax credits expire through 2017.
Income tax provision (benefit) continuing and discontinued operations	26	32	(2)
Cash paid for income taxes, net of refunds received	17	12	8
Statutory federal income tax rate	35.00%
Expected increase in unrecognized tax benefits within 12 months	2
Lower Limit
Income Taxes [Line Items]
Open tax year by major tax jurisdiction	2010
Upper Limit
Income Taxes [Line Items]
Open tax year by major tax jurisdiction	2013
Mexico
Income Taxes [Line Items]
Valuation allowance	44
Canada
Income Taxes [Line Items]
Valuation allowance	4
Brazil
Income Taxes [Line Items]
Valuation allowance	3
United States
Income Taxes [Line Items]
Valuation allowance	$ 10